WIRING BOARD AND DISPLAY APPARATUS

• US 20120235713A1
• Filed: 07/01/2010
• Published: 09/20/2012
• Est. Priority Date: 11/18/2009
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Mori, Junichi
• Granted Patent: US 9,078,363 B2
• Time in Patent Office: Days
• US Class Current: 327/109
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G09G 3/2092 Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165
• CPC Class Codes: H05K 1/0289 having a matrix lay-out, i.e. having selectively interconnectable sets of X-conductors and Y-conductors in different planes
• CPC Class Codes: H05K 2201/10136 Liquid Crystal display [LCD]

Abstract

The present invention provides a wiring board wherein the resistance difference between multiple connection lines is reduced. The wiring board of the present invention comprises: a control region and a peripheral region. The control region includes multiple gate lines extending in a row direction and multiple source lines extending in a column direction. The peripheral region includes a gate driver connected with the gate lines; a source driver connected with the source lines; and multiple connection lines which extend around the control region and which connect the gate driver with the gate lines. Each of the connection lines includes a gate metal portion formed from a material of the gate lines and a source metal portion formed from a material of the source lines. An insulating layer is disposed between the gate metal portion and the source metal portion. The gate metal portion and the source metal portion are connected with each other via a contact portion which penetrates the insulating layer.

Claims

1. A wiring board, comprising:

a control region including

multiple gate lines extending in a row direction, and

multiple source lines extending in a column direction; and

a peripheral region including

a gate driver connected with the gate lines,

a source driver connected with the source lines, and

multiple connection lines which extend around the control region and which connect the gate driver with the gate lines,

each of the connection lines including a gate metal portion formed from a material of the gate lines and a source metal portion formed from a material of the source lines,

an insulating layer being disposed between the gate metal portion and the source metal portion, and

the gate metal portion and the source metal portion being connected with each other via a contact portion which penetrates the insulating layer.

2. The wiring board according to claim 1,

wherein connection lines formed from a material of the gate lines and a material of the source lines extend from the gate driver alternately in order.

3. The wiring board according to claim 1, further comprising multiple source connection lines connecting the source driver with the source lines,

wherein connection lines formed from a material of the gate lines and a material of the source lines extend from the source driver alternately in order.

4. The wiring board according to claim 1,

wherein the connection lines extend from the gate driver alternately in order, and the connection lines extending from both left and right ends alternately in order are connected with the respective gate lines in an ascending order of the row number.

5. The wiring board according to of claim 1,

wherein, in each of the connection lines, a ratio of a length of the gate metal portion and that of a length of the source metal portion to the whole length of the connection line is substantially identical among the connection lines.

6. The wiring board according to claim 1,

wherein the contact portion is placed at substantially the middle point of the connection line.

7. The wiring board according to claim 1,

wherein the contact portions of a pair of the connection lines adjacent to each other are placed at different positions in the column direction.

8. The wiring board according to claim 1, further comprising a switching element for each of pixels surrounded by the gate lines and the source lines.

9. The wiring board according to claim 8,

wherein polarity of the pixels in one column is different from that of the pixels in an adjacent column.

10. The wiring board according to claim 8,

wherein polarity of one pixel is different from that of an adjacent pixel.

11. A display apparatus, comprising the wiring board according to claim 1.